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Physics: Are we forever trapped in the arrow of time? | Sabine Hossenfelder

Why does time move forward but not backward? Physicist Sabine Hossenfelder explains. Subscribe to Big Think on YouTube ►    / @bigthink   Up next, The mind-bending physics of time ►    • The mind-bending physics of time | Se...   Why does time move in only one direction? This still-unsolved question was posed in 1927 by the British astrophysicist Arthur Eddington, and the concept came to be known as the arrow of time. As theoretical physicist ‪@SabineHossenfelder‬ explains, there's a longstanding mystery in the foundations of physics: If we look at the laws for microscopic constituents, like elementary particles, they work the same way forward in time as they do backward in time. But the same does not hold true on macroscopic scales. In this Big Think video, Hossenfelder dives into this mystery and explores how it has captivated the minds of so many scientists and science fiction writers. 0:00 The arrow of time 1:14 Why doesn’t anyone get younger? 2:39 Can we stop human aging with entropy control? 4:01 Is ‘maximum entropy’ how the universe will end? Read the video transcript ► https://bigthink.com/series/explain-i... ---------------------------------------------------------------------------------- About Sabine Hossenfelder: Sabine Hossenfelder is a physicist, author, and creator of "Science Without the Gobbledygook". She currently works at the Munich Center for Mathematical Philosophy in Germany. ---------------------------------------------------------------------------------- Read more of our stories on time: Does time really exist? ► https://bigthink.com/starts-with-a-ba... Will time run backward if the Universe collapses? ► https://bigthink.com/starts-with-a-ba... What are wormholes? ► https://bigthink.com/hard-science/wor... ---------------------------------------------------------------------------------- About Big Think | Smarter Faster™ ► Big Think The leading source of expert-driven, educational content. With thousands of videos, featuring experts ranging from Bill Clinton to Bill Nye, Big Think helps you get smarter, faster by exploring the big ideas and core skills that define knowledge in the 21st century. ► Big Think+ Make your business smarter, faster: https://bigthink.com/plus/ ---------------------------------------------------------------------------------- Want more Big Think? ► Daily editorial features: https://bigthink.com/popular/ ► Get the best of Big Think right to your inbox: https://bigthink.com/st/newsletter ► Facebook: https://bigth.ink/facebook ► Instagram: https://bigth.ink/Instagram ► Twitter: https://bigth.ink/twitter